Abstract
The bluish-green long persistent phosphor (LPP) materials ZrP2O7:Nd3+ were synthesized in a reducing atmosphere by a conventional high-temperature solid state reaction. The XRD patterns, XPS survey scan, excitation and emission spectra, decay curves and thermoluminescence (TL) curves were used for investigating the structure and luminescence properties and mechanism of the materials. The emission band between 400 and 600 nm exhibit the characteristics of blue emission from d-d transitions of Zr and the characteristics of green emission from f-f transitions of Nd3+. The TL curves showed that the formation of high-concentration trap level at 337 K (0.73 eV) was mainly responsible for the LPP phenomenon of ZrP2O7:Nd3+ at room temperature.
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